Hot-water furnace or heater



July 27, 1926.

. 1,593,844 C. O. NY GAARD HOT WATER FURNACE OR HEATER File Jan. 28,1924 2 Sheets-Sheet 1 July 27 1926.

, 1,593,844 (3. O. NYGAARD HOT WATER'FURNACE OR HEATER Filed Jan. 2 19242 Sheets-Sheet '2 I N VE/V T0211 (mu 0. N e/mm '7 1 4 e A. etentedldulyll'l.

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implication filed Sensory so, 195%. Ho.

This invention relates to at hot water heat or or furnace and isapplicable to furnish a supply of hot water steam or vapor whereverneeded, pzwticulcrly to the radiator in a hot water steam or vaporhosting system.

It is on object of this invention to provide such e heater or furnacecomprising super mg central passages therethrone coznmuni outing withsaid hollow arms; the hollow rings, arms and central passage formingwater chambers.

lit is still another object or the invention. to have a heater orfurnace composed of such superposed sections with gas passagestherethrough, in combination with means at the top and bottom of theheater or furnace to regulate such gas passages.

These and other objects end. advantages of the invention will more fullyappear from the following description mode in connection with thecccompanying drawings in which like reference characters refer to thesame parts throughout the difierent views, end in which Fig. 1 is :1.vertical section through the device token substantially on the line 1-lof llio" 2- Fig. 2 is c horizontal section taken on the line 2--2 o1tFig. l; I I

h 1g. 31s at plan view oat one oi; the sections used, part thereof beingshown in horizontal section;

4 is a sectiontcken'on the line s t of Fig. l;

Fig. 5 is c section taken on the line 5-5 of l, the slime losing shownon a reduced scale; end, p

llig. t is e vertical section on c somewhat enter-god see-lo of one ,olthe connecting sleeves used.

Referring to the drawings, the devicecpnn prises a. hollow orshell-l-ike trusts-conical base frame 1, having concentric ribs l and 1*at its top provided with ennnlcr grooves therein. A flange, 1" extends'hmween the slot formed through said sections,

bottom of the ribs 1 end .1 which is provided with circuinterentiullyspaced spertures .l An annular piste 2 rests upon the flange 1 and isadopted to be rotated between the rilos 1 and l and on ssid fienge,which plate is provided wii e laterally projecting handle 2" whichprojects throu h a in the outer rib l by means or w 'ch handle the plate2 is rotated. Plate 2 is also provided with circumferentielly spacedopenings 52* which may be brought into or out of slinement with theopening l in the flange 1. Supported upon the ribs 1 end 1 are aplurality of superposed circular sections 3, one of which is shown inplan in Fig. 3. The sections 3 are of considerable vertical extentundhsve cooperating ennuler tongues and grooves on their respectivehorizontul sides, so that the sections fit together in superposedrelation, as clearly shown in Fig. l. Said sections 3 comprise spacedhollow rings 3 end 3" which are con nected by radially extending hollowarms 3 end 3, respectively. The spaces between the rings 3 and 3 and thearms 3 and 3 form vertical openings i and 5 through the sections 3 andother vertical passeges 3 are being surrounded with suitsble wellsextending be tween the top and bottom of said section. The sections 3also have at central pessege therethrough preferably oi cylindrical.-shepe, as illustrated, with which the inner ends of the hollow srins 3coinincniccte, the open inner ends of said-arms forming vertical slots3, as shown in Figsxl end 3. The various memhersor sections 3 erearranged in seid superposed relation with the openings 3, d and 5 invertical slinement, so that vertical passages are formed extending fromthe lower section to the top section 3, as shown in Fig. l. The centralpesszige of the lowest section 3 is closed, as shown. at 6 and it willbe seen that the plate 3 end flange 1 are disposed directly below thevertical passages formed by the openings 3 and 5. The top section 7rests upon the upperrhost section 3, losing provided in its lower sidewith concentric tongues'fitting in the concentric grooves in saidupperunost section. 3 and said section 7 is provided with at centralchamber 7", the top of which is closed and said chamber is connected byradial arms 7 to an outer ring 7, which ring 7 has vertical gas passages7 therethroughsimiler to and elined with the gas Ell til

passages 3 Circumferentially spaced gas passagesare thus formed betweenthe ring 7 to the chamber 7 and the arms 7. An annular flange 7 upstandsfrom the top of chamber 7 and an annular plate 8 rests upon the top ofsection 7 having a central opening fitting about the flange 7 whichplate is thus rotatable on section 7 and about said flange. The plate 8is provided with circumferentially spaced sector-shaped open-- ings 8adapted to be broughtinto or out of alinen'ient with the openingsbetween the arms 7 and said plate is provided with an operating handle 8projecting through a slot in an upwardly projecting rib 7 extendingaround the upper and outer edge of section 7. A top dome-shaped member 9has an annular tongue at its bottom edge adapted to lit in the groove inrib 7, the outer surface of said top being flush with the outer surfaceof section 7 and the sections 3. The top 9 is contracted at its uppercentral portion to form a conduit adapted to be connected to thechimney. An inlet pipe 10 for water is connected to the outer wall ofthe lowermost section 3 and an outlet pipe 11 for water is connected tothe outer wall of the section '7.

Ar. intermediate section 13 is provided similar in all respects, to thesections 3, except that it docs not have the openings 3 into the centralpassage thereof and inlet and outlet pipes 14: and 15, respectively,connect with the. outer wall of said section 13 at opposite sidesthereof. The sections 3, 7 and 13 are connected at their central ortionsby sleeves 16 which project at t eir ends some distance into theadjacentcentral portions of the said sections. The sleeves 16 areslightly tapered at their ends, as shown at 16 in Flg. 6 and are dr1veninto the central portions of the various sections so that the sectionsare connected and a continuous passage is formed centrally thereof fromthe bottom wall 6 to the top of chamber 7". burner 17 for gas, oil orother suitable fuel is disposed immediately below the center of thelowermost section 3 and its wall 6. Said burner will he su plied withfuel by conduit 18 adapted to is connected to a suitable fuel supply.

In operation, the inlet and outlet pipes 10 and 11 will be connected tothe device to which the heated water is supplied, such as the radiatorsof a hot water system and said inlet pipe 10 will also be connected to awater supply system not shown. ,VVater will enter pipe 10 and flow intothe outermost ring or" the lowermost section 3 around the passages 3thcrethrough, will pass through the arms 3 into ring 3 and through arms3", slots 3 into the central chamber of the section. Said. water willrise through the central. chamber and flow out through the sl ts of thenext section into the various massacwater chambers therein. The Waterchainbers of all of the sections will thus be filled. The burner 17being lighted and the plates 2 and 8 being turned to close the passagesthrough flange 1 and between arms 7, the

'heated air and products of combustion will pass upwardly through thealined space 4- of the sections, as indicated by the lower arrows inFig. 1., and this air will then pass downwardly through the passageformed by the alined openings 5 and will then return, as indicated bythe outer lower arrows in Fig. 1, up through the passage formed by thealined openings 3*, said heated air and products of combustion thenbeing considerably cooled in passing out through the top of the member9. The water in the various sections will thus be heated and will risethrough the various sections through the central passages thereo'ithrough the slots 3 so that the heated Water will pass out of the outlet11 to the radiators. 'lhe returning cooled water will return throughinlet pipe 10 to again circulate through the device. it will beunderstood, of course,.that the connection to the Water supply will beturned oii' as soon as the heater is suitably supplied with water. Whena strong draft is desired, as when starting a lire, one or both of theplates 2 and 8 may be revolved to bring the openings therein in registerwith the open-- ing's through the flange 1 or between the arms 7,respectively, so that a free passage for the air and products of combustion. will then be effected directly through the yarious alined gaspassages s 5 and 3". After the fire is well under way and the furnace orheater brought to the proper temperature, the gas passages may becontrolled as desired by rotating the 2 arid 8. a

It will lie-noted that the 13 is not connected into the circulating 5item by the slots 3. This section is prvided to furnish a supply of hotwater r the purpose of household and domestic use. it is de sired tohave this Water clean at all times and the inlet and outlet pipes let15, respectively, will be connected in a domestic water supply line sothat ho water may be drawn from section 13 through the pipe 1-5 whendesired, said hot water being replaced by water running through pipe 14.

From the above description it i masses It will, of course, beunderstood, that various changes may be made in the form, details,arrangement and pro ortions of the parts without departing rom the scopeof applicants invention, which, generally stated, consists in a devicecapable of carrying out the objects above set forth, such as shown anddescribed and set forth in the appended claims.

What is claimed is: i 4

1. A hot water heater comprising a series of superposed circularsections, a series of concentric gas passages therein extendingvertically in alinement through said sections, a series of concentricwater chambers formed in said sections'between said gas passages, radialarms connecting adjacent chambers, a central cylindrical water chambercommunicating with said first mentioned chambers, a burner below saidsections, said gas passages bein normally adapted to communicatedirectly from above said burner to an upper outlet, and means forclosing certain of said gas passages to compel air and products ofcombustion from said burner to serpentine from one set of the concentricgas passages to the next adjacent. set of concentric gas passages toreach a tinal outlet.

2. A hot water heater comprising a series of superposed sections,concentric alincd gas passages therein running vertically through saidsections, concentric water chambers formed in said sections by said gaspassages, radial arms communicating between said water chambers andcommunicating gas passages above the upper section and below the lowersection connecting the inner concentric gas passages to the outer gaspassages at the top and bottom of the superposed structure, and meansfor closing said communicating gas passages to direct air and otherproducts all tilt

of combustion alternately upwardi-and downward through successiveconcentric gas passages to pass tortuousl'y to an outlet 3. A hot waterheater comprising-a series of superposed sections tuning a plurality ofradially and circuniierentially spaced gas passages therethrough, aspace between said gas passagcs forming water chambers, said gaspassages being arranged to form uuobstructed radial passages from theouter wall to thc inner wall of said section. said section havingcentral cylindrical openings thcrethrough, the walls of which havecircumi'erentially spaced slots alined with said unobstructed passages,said central passage being closed at. the lower side oi the lowermostsection. a burncr disposed bclow said lowermost section. and means forcompelling a return circulation of gases heated by said burner throughthe spaced gas passages.

4. A hot water heater comprising a series adjacent outwardly ofsuperposed sections having radially and circumferentially spaced gaspassages therethrough, the space between said gas passages forming waterchambers, said gas passages being arranged to form unobstructed radialpassages from the outer wall to the inner wall of said sections, saidsections having central cylindrical openings therethron h, the walls ofwhich have circuinferentifily spaced slots alined with said unobstructedpassages, said central passage being closed at the lower side of thelowermost section, a

5. A. hot Water heater comprising a series of superposed circularsections having a plurality of radially and circumi'ereut-ially spacedvertically aligned gas passages extending; therethrough at each side ofthe center thereof forming continuous passages from the bottom to thetop of the heater, the space between said gas passages in said sectionsformingcommunicating water chambers, said sections also having centralpassages therethrough communicatin with said water chambers, a burnerdisposed below the lowermost section, means disposed below the lowermostsection for closing or partially closing certain of the outer gaspassages therethrough; and means disposed above the uppermost sectionfor closing or partially closing certain of the, inner gas passagestherethrough, whereby a return circulation of the gases of combustionfrom the top to the bottom of said gas passages may be obtained frominner to outer passages.

(3. A hot water heater con'iprising a series of superposed circularsections, concentric water chambers therein, communicating arms bet weensaid chambers, vcrticall i alined inner and outer gas passages extendiug vertically through the length of the superposed structure throughadjacentconcent-ric chambers. a damper for closing the outer gaspassages at the bottom section, a damper for closing the inner gaspassages at the top scctiou. and a burner below said sections wherebywhen the said dampers are closed, the c'ascs heated by said burner willpass first through the inner gas passagcs and then through the outer gaspassages.

in testimony whereof I attix my signature.

CARL o. nreasnn.

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